It will work. Putting a graphics card with PCIE 3.0 x16 interface to a PCIE 2.0 x16 slot has no difference in real world usage. http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI-Express_Scaling/
It will work. Putting a graphics card with PCIE 3.0 x16 interface to a PCIE 2.0 x16 slot has no difference in real world usage. http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI-Express_Scaling/